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LIVE LOAD FIELD TEST ON THE MUSKWA RIVER BRIDGE

The performance of a steel-concrete composite box-girder bridge is examined through a series of live load field measurements. This paper describes the measurement program and the results obtained, as well as comparisons wherever possible between the observed values and those obtained from beam theory calculations and bridge code equations. It was found that the measured strains were generally much lower than the design values and that for bridges with asymmetrical cross sections, a beam theory calculation using bridge code live load distribution formulas can lead to nonconservative results. /Author/